went to the dyno.... very upset
05-29-2006, 06:51 PM
#101
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Originally Posted by Chevypowered
Also you were saying you can't do a 3rd gear pull but you can. They have to run it in 2nd and take it high in the RPM's to right before it will shift then put it and drive and punch it, this will give you a 3rd gear pull with out any screw ups, they just need to know what they are doing.
05-29-2006, 07:47 PM
#102
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they handel great
the car looks higher than it is in that pic b/c im lower than it
another old shot, you can see how low the wheel well gap it, it looks like there is room under here but picture an exhaust 2.25 inches under the car.... it would be around as low as my mud flaps wich almost scrape.... my muffler scrapes as it is
look very close. you can see my 2" exhaust hanging down a bit... right behind that little lip on the rocker panel... look behind it ull see it right before it bends up over the rear axel
the car looks higher than it is in that pic b/c im lower than it another old shot, you can see how low the wheel well gap it, it looks like there is room under here but picture an exhaust 2.25 inches under the car.... it would be around as low as my mud flaps wich almost scrape.... my muffler scrapes as it is look very close. you can see my 2" exhaust hanging down a bit... right behind that little lip on the rocker panel... look behind it ull see it right before it bends up over the rear axel
05-29-2006, 07:48 PM
#103
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anothe rpic i found compairing it to my Gf's car .... i know hers is set back further than mine but u can still get an idea... stock eclipses r pretty low, hers is a GT
05-29-2006, 08:27 PM
#104
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unless your exhaust is hung wrong you are not gonna notice a difference between 2.25" and 2"...I'm willing to bet a good amount of money that a 2.25" exhaust is gonna look exactly like what you have on there now.
05-29-2006, 10:28 PM
#106
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hmm idk i forgot to look when i had it on a hoist... i know i have a hanger in back.... and no the 2.25 wont fit lol stop telling me it will....
It will hang more than .25 lower than mine now because its .25 all the way around meaning it wont fit in the exhaust channel that is made in the underbody and also why is everyone still talking about this, i obveously have a brand new exhaust set up on mycar.... im not going to go bend up new pipes tomorrow so i can have .25 bigger of a pipe that i know will not work with the resources i have lol thanks for your help but lets plz drop this(besides NJHK b/c hes the only one not repeating everyone else lol)
It will hang more than .25 lower than mine now because its .25 all the way around meaning it wont fit in the exhaust channel that is made in the underbody and also why is everyone still talking about this, i obveously have a brand new exhaust set up on mycar.... im not going to go bend up new pipes tomorrow so i can have .25 bigger of a pipe that i know will not work with the resources i have lol thanks for your help but lets plz drop this(besides NJHK b/c hes the only one not repeating everyone else lol)
05-29-2006, 10:37 PM
#107
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how are we repeating everyone else? ive had and been modding my car for over 2 years, i think i know alittle more of what im talking about when i tell you you can put bigger exhaust and be fine. My car has 2.25" downpipe back (downpipe is 2.5") and i have plenty of room to lower my rear a decent amount before i have any issues. btw the bored t/b will help you some, no its not huge power but bolt ons add up. oh well.
05-29-2006, 10:52 PM
#108
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ok but point being its not like im going to go swap out my exhaust to make you happy.... if im wrong im wrong, im not saying its impossible but its not possible with the reasources i have (as i said above).... also your car may be fine.... Hell i have a durango with 3"+ all the way back.... you dont have it done on your cobalt im guessing your sunfire probably..... with the tools the shops have out here to bend my exhaust they cant do it, the pipe would be too wide to fit into the channel meaning i would have a pipe hangin 2.25 inches below my car and ill pass on that for one it would look like ****.
and for the record ive been modding cars over 2 years too, that means nothing 2 years isnt that long bro
and for the record ive been modding cars over 2 years too, that means nothing 2 years isnt that long bro
05-29-2006, 11:29 PM
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2 years is plenty of time to learn the jbody and delta platform tips and tricks on modding our engines. i have a rebuilt forged bottom end and built head and boost and ive had 2 inch exhaust and 2.25 which is wha time using now and i have found that even when i was close to stock 2.25" helped me alot. i could care less if you put differant exhaust on your car to make me happy or not, im just telling you how to get some more power since i have alot more done to my car and have fooled with differant ways to get power outta simple bolt ons. I kinda agree that your exhaust is poorly hung because in no way should a small 2 inch exhaust piping hang at all.
05-30-2006, 12:48 AM
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I think that you got 2" piping without knowing any better and are now looking for some type of justification (and a weak one at that) for getting what you did...honestly.
but I'll go ahead and drop it now
but I'll go ahead and drop it now
05-30-2006, 07:50 AM
#111
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so then if i have it in 2nd gear on the dyno how far off would that be from the actual Hp/Tq raitings? does anyone know the ratio numbers, i guess anything is better than my pull. Also would i still get a full readout b/c like some of you said it will shift to 3rd on its own
05-30-2006, 10:21 AM
#112
I'm old school
Ok bio, let me help you out here. First, I have the same car you do, so you know I understand.
To dyno an automatic, you have to have control over the gear shifting, which we don't.
You need to be able to hold the trans in 3rd gear with the converter locked, which we can't.
HP Tuners software is going to allow you to adjust line pressures, shift points, firmness, torque limiters, all that sort of thing. But it WILL NOT allow you to keep the car dynamically in a single gear, which is what you need.
Your dyno numbers aren't wrong, they are just what you were doing at the time the recorder was running. Want to see more numbers with changing your set up? Do a full acceleration run, from zero MPH to your 105 MPH limiter. You will get graphs for each gear, including 3rd.
Now if you want to force the trans to hold 3rd with a locked converter so you can do some dyno tuning, your going to need a little toy from IPT called the Electro-Matic manual controller.
click here
then scroll down to "electronics" and click on the controller.
This little gem gives you full control over your automatic trans, and is exactly what you need if you want to dyno tune your automatic Cobalt.
Your welcome.
To dyno an automatic, you have to have control over the gear shifting, which we don't.
You need to be able to hold the trans in 3rd gear with the converter locked, which we can't.
HP Tuners software is going to allow you to adjust line pressures, shift points, firmness, torque limiters, all that sort of thing. But it WILL NOT allow you to keep the car dynamically in a single gear, which is what you need.
Your dyno numbers aren't wrong, they are just what you were doing at the time the recorder was running. Want to see more numbers with changing your set up? Do a full acceleration run, from zero MPH to your 105 MPH limiter. You will get graphs for each gear, including 3rd.
Now if you want to force the trans to hold 3rd with a locked converter so you can do some dyno tuning, your going to need a little toy from IPT called the Electro-Matic manual controller.
click here
then scroll down to "electronics" and click on the controller.
This little gem gives you full control over your automatic trans, and is exactly what you need if you want to dyno tune your automatic Cobalt.
Your welcome.
05-30-2006, 07:25 PM
#116
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wow thats expensive but thanks halfcent, i think ill wait for HPtuners... will it get rid of my 105 MPH limiter? then i can just pull 4th gear right? if so, is it bad to pull straight fourth gear? like ive never maxed a car out. I dont fully know how to explain what im asking, like would i just let 4th gear pull until like 6,500 or something? or just go until it "stops" or would that blow it..... ive never seen an auto car dynoed b4 besides mine so idk what is all going to happen
05-30-2006, 07:27 PM
#117
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the whole 0-105 thing sounds cool but i will probably hit 105 in 3rd then right? like if i get on it hard? sorry for being a post ***** lol at least i would get a solid 1rst, 2nd, and maybe 3rd gear pull right?
05-30-2006, 08:04 PM
#119
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nope did it myself the back is really easy all you need is a floor jack and 2 jack stands.... dont even need the tires off.... i had 2 friends help me with the front toook alot longer... you need the tires off, and alot more tools including a wall mounted spring compressor, i also used a hoist, and put the camber kit in during this while the bolts are out... if anythign do the rears and then just pay for the fronts to be done, or take your struts out in front
and just bring those into a sho with your new springs, it weill be cheapest that way
and just bring those into a sho with your new springs, it weill be cheapest that way
05-30-2006, 09:52 PM
#122
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the whole getting rid of the speed limiter is for people who actually go over that in the 1/4 mile, you dont have to worry about hitting that til you hit low 13's at least. til then theres no reason to worry about taking it off.
05-30-2006, 10:47 PM
#123
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will make a 4th gear pull alot easier and idk it just bugs me the vioce in my head reminding me my car only goes 105.... itd just be nice to et it off
05-31-2006, 03:06 PM
#124
I'm old school
Originally Posted by biohazard
the whole 0-105 thing sounds cool but i will probably hit 105 in 3rd then right? like if i get on it hard? sorry for being a post ##### lol at least i would get a solid 1rst, 2nd, and maybe 3rd gear pull right?
Get on the dyno, put it in gear, floor it. Let the car just accelerate normally through its gears until it gets to 4th.
05-31-2006, 08:35 PM
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i cant believe nobody mentioned this, go to the dealer, and tell em you want yout ECU reflashed because you put on better tires, should remove your speed limiter